405040

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{83}}^1$

素因数の和:157

約数の個数: 40

約数和(自身を含む): 968688

約数和(自身を除く): 563648

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 80, 83, 122, 166, 244, 305, 332, 415, 488, 610, 664, 830, 976, 1220, 1328, 1660, 2440, 3320, 4880, 5063, 6640, 10126, 20252, 25315, 40504, 50630, 81008, 101260, 202520, 405040]

約数ペア:

[(1, 405040), (2, 202520), (4, 101260), (5, 81008), (8, 50630), (10, 40504), (16, 25315), (20, 20252), (40, 10126), (61, 6640), (80, 5063), (83, 4880), (122, 3320), (166, 2440), (244, 1660), (305, 1328), (332, 1220), (415, 976), (488, 830), (610, 664)]